Method for the preparation of a lithium phosphate compound with an olivine crystal structure
US8722004B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2009 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | May 15, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B25/37
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to a method for the preparation of a lithium phosphate compound with an olivine crystal structure, which has a chemical formula of LixMyM′1-yPO4, wherein 0.1≦x≦1, 0≦y≦1. The nano-scale lithium phosphate ceramic powder was synthesized by using a self-propagating combustion with reactants of soluble salts and the proper oxidizing agents, followed by heat treatment of powder to obtain nano-scale lithium phosphate compound with an olivine crystal structure in a complete crystal phase. The method of the present invention uses low cost materials and simple processes. The uniform crystal product materials are beneficial to the industrial application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.